Product Description
Hydraulic seal kit compatible with manual pallet jack pump assemblies. Kit includes polyurethane, nitrile, and rubber seals for hydraulic pistons, cylinders, and valves. Designed for restoring seal integrity in manual pallet jacks such as Crown, BT, Bishamon, and Uline models. Suitable for bores up to 2.5 inches and system pressure up to 3000 PSI. Manufactured to ASTM material standards.
Specifications
Material & Construction
| Seal Material Specification | Nitrile rubber per ASTM D2000 and polyurethane |
| Rod Wiper Material | Polyurethane, hardness 85 Shore A |
Part Numbers & Compatibility
| Manufacturer Part Number | SY52899 |
Frequently Asked Questions
Q: What seals and materials are included in the SY52899 kit?
A: The SY52899 hydraulic seal kit includes polyurethane, nitrile, and rubber seals for hydraulic pistons, cylinders, and valves. The rod wiper material is polyurethane with 85 Shore A hardness. All materials comply with ASTM material standards for hydraulic fluid compatibility.
Q: What manual pallet jack models is the SY52899 compatible with?
A: The SY52899 is designed for pump assemblies in manual pallet jacks manufactured by Crown, BT, Bishamon, and Uline. The kit accommodates bore sizes up to 2.5 inches. Verify your pump bore diameter and piston rod diameter match the kit specifications before ordering.
Q: What pressure rating does the SY52899 seal kit support?
A: The SY52899 is rated for system pressures up to 3000 PSI, which covers standard manual pallet jack hydraulic systems. Do not use this kit in higher-pressure applications as seal materials will not provide adequate containment and will fail prematurely.
Q: How do I know when to replace seals with the SY52899 kit?
A: Replace seals immediately if you observe hydraulic fluid leakage from pump cylinders or valve housings, loss of lift pressure, slow or jerky pump action, or fluid pooling under the pallet jack. These symptoms indicate seal wear or deterioration and require prompt seal replacement to prevent complete hydraulic failure.
Q: What is the typical lifespan of the SY52899 seal kit?
A: Seal lifespan depends on operational hours, fluid condition, and environmental exposure. Well-maintained pallet jacks using clean hydraulic fluid typically achieve 2 to 5 years of service. Seals degrade faster in hot environments, with contaminated fluid, or in high-cycle applications. Replace seals at first sign of leakage.